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Köhler, Peter; Nehrbass-Ahles, Christoph; Schmitt, Jochen; Stocker, Thomas F; Fischer, Hubertus (2017): Continuous record of the atmospheric greenhouse gas methane (CH4), raw data (Version 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.871263, In supplement to: Köhler, P et al. (2017): A 156 kyr smoothed history of the atmospheric greenhouse gases CO2, CH4, and N2O and their radiative forcing. Earth System Science Data, 9(1), 363-387, https://doi.org/10.5194/essd-9-363-2017

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Köhler, Peter; Nehrbass-Ahles, Christoph; Schmitt, Jochen; Stocker, Thomas F; Fischer, Hubertus (2017): Continuous record of the atmospheric greenhouse gas methane (CH4), raw data (Version 2). PANGAEA, https://doi.org/10.1594/PANGAEA.876007
Related to:
Buizert, Christo; Adrian, Betty; Ahn, Jinho; Albert, Mary; Alley, Richard B; Baggenstos, Daniel; Bauska, Thomas K; Bay, Ryan C; Bencivengo, Brian B; Bentley, Charles R; Brook, Edward J; Chellman, Nathan J; Clow, Gary D; Cole-Dai, Jihong; Conway, Howard; Cravens, Eric; Cuffey, Kurt M; Dunbar, Nelia W; Edwards, Jon S; Fegyveresi, John M; Ferris, David G; Fitzpatrick, Joan J; Fudge, Tyler J; Gibson, Chris J; Gkinis, Vasileios; Goetz, Joshua J; Gregory, Stephanie; Hargreaves, Geoffrey M; Iverson, Nels; Johnson, Jay A; Jones, Tyler R; Kalk, Michael L; Kippenhan, Matthew J; Koffman, Bess G; Kreutz, Karl; Kuhl, Tanner W; Lebar, Donald A; Lee, James E; Marcott, Shaun A; Markle, Bradley R; Maselli, Olivia J; McConnell, Joseph R; McGwire, Kenneth C; Mitchell, Logan E; Mortensen, Nicolai B; Neff, Peter D; Nishiizumi, Kunihiko; Nunn, Richard M; Orsi, Anais J; Pasteris, Daniel R; Pedro, Joel B; Pettit, Erin C; Buford Price, Paul; Priscu, John C; Rhodes, Rachael H; Rosen, Julia L; Schauer, Andrew J; Schoenemann, Spruce W; Sendelbach, Paul J; Severinghaus, Jeffrey P; Shturmakov, Alexander J; Sigl, Michael; Slawny, Kristina R; Souney, Joseph M; Sowers, Todd A; Spencer, Matthew K; Steig, Eric J; Taylor, Kendrick C; Twickler, Mark S; Vaughn, Bruce H; Voigt, Donald E; Waddington, Edwin D; Welten, Kees C; Wendricks, Anthony W; White, James W C; Winstrup, Mai; Wong, Gifford J; Woodruff, Thomas E (2015): Precise interpolar phasing of abrupt climate change during the last ice age. Nature, 520(7549), 661-665, https://doi.org/10.1038/nature14401
Buizert, Christo; Cuffey, Kurt M; Severinghaus, Jeffrey P; Baggenstos, Daniel; Fudge, Tyler J; Steig, Eric J; Markle, Bradley R; Winstrup, Mai; Rhodes, Rachael H; Brook, Edward J; Sowers, Todd A; Clow, Gary D; Cheng, Hai; Edwards, Ross L; Sigl, Michael; McConnell, Joseph R; Taylor, Kendrick C (2015): The WAIS Divide deep ice core WD2014 chronology - Part 1: Methane synchronization (68–31 ka BP) and the gas age–ice age difference. Climate of the Past, 11(2), 153-173, https://doi.org/10.5194/cp-11-153-2015
Dlugokencky, Edward J; Lang, Patricia M; Mund, John; Crotwell, Andy; Crotwell, Molly; Thoning, Kirk W: Atmospheric Methane Dry Air Mole Fractions from the NOAA ESRL Carbon Cycle Cooperative Global Air Sampling Network, 1983-2015. Version: 2016-07-07 - ftp://aftp.cmdl.noaa.gov/data/trace_gases/ch4/flask/surface/ - ftp://aftp.cmdl.noaa.gov/data/trace_gases/ch4/flask/surface/ch4_spo_surface-flask_1_ccgg_month.txt, hdl:10013/epic.51033.d001
Köhler, Peter; Nehrbass-Ahles, Christoph; Schmitt, Jochen; Stocker, Thomas F; Fischer, Hubertus (2017): Continuous records of the atmospheric greenhouse gases CO2, CH4, and N2O and their radiative forcing since the penultimate glacial maximum. Earth System Science Data Discussions, https://doi.org/10.5194/essd-2017-6
Loulergue, Laetitia; Schilt, Adrian; Spahni, Renato; Masson-Delmotte, Valerie; Blunier, Thomas; Lemieux, Bénédicte; Barnola, Jean-Marc; Raynaud, Dominique; Stocker, Thomas F; Chappellaz, Jérôme A (2008): Orbital and millennial-scale features of atmospheric CH4 over the past 800,000 years. Nature, 453(7193), 383-386, https://doi.org/10.1038/nature06950
MacFarling Meure, C; Etheridge, David; Trudinger, Cathy M; Steele, P; Langenfelds, Ray L; van Ommen, T; Smith, Andrew; Elkins, J (2006): Law Dome CO2, CH4 and N2O ice core records extended to 2000 years BP. Geophysical Research Letters, 33(14), 4 pp, https://doi.org/10.1029/2006GL026152
Marcott, Shaun A; Bauska, Thomas K; Buizert, Christo; Steig, Eric J; Rosen, Julia L; Cuffey, Kurt M; Fudge, Tyler J; Severinghaus, Jeffrey P; Ahn, Jinho; Kalk, Michael L; McConnell, Joseph R; Sowers, Todd A; Taylor, Kendrick C; White, James W C; Brook, Edward J (2014): Centennial-scale changes in the global carbon cycle during the last deglaciation. Nature, 514(7524), 616-619, https://doi.org/10.1038/nature13799
Mitchell, Logan E; Brook, Edward J; Lee, James E; Buizert, Christo; Sowers, Todd A (2013): Constraints on the Late Holocene Anthropogenic Contribution to the Atmospheric Methane Budget. Science, 342(6161), 964-966, https://doi.org/10.1126/science.1238920
Mitchell, Logan E; Brook, Edward J; Sowers, Todd A; McConnell, Joseph R; Taylor, Kendrick C (2011): Multidecadal variability of atmospheric methane, 1000–1800 C.E. Journal of Geophysical Research, 116(G2), https://doi.org/10.1029/2010JG001441
Sigl, Michael; Fudge, Tyler J; Winstrup, Mai; Cole-Dai, Jihong; Ferris, David G; McConnell, Joseph R; Taylor, Kendrick C; Welten, Kees C; Woodruff, Thomas E; Adolphi, Florian; Bisiaux, Marion M; Brook, Edward J; Buizert, Christo; Caffee, Marc W; Dunbar, Nelia W; Edwards, Ross L; Geng, Lei; Iverson, Nels; Koffman, Bess G; Layman, Lawrence; Maselli, Olivia J; McGwire, Kenneth C; Muscheler, Raimund; Nishiizumi, Kunihiko; Pasteris, Daniel R; Rhodes, Rachael H; Sowers, Todd A (2016): The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP). Climate of the Past, 12(3), 769-786, https://doi.org/10.5194/cp-12-769-2016
Coverage:
Median Latitude: -77.825333 * Median Longitude: 31.024333 * South-bound Latitude: -90.000000 * West-bound Longitude: -112.086000 * North-bound Latitude: -66.733330 * East-bound Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00
Minimum Elevation: 1390.0 m * Maximum Elevation: 3233.0 m
Event(s):
EDC (EPICA Dome C) * Latitude: -75.100000 * Longitude: 123.350000 * Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Elevation: 3233.0 m * Recovery: 3300 m * Location: Dome C, Antarctica * Campaign: Dome C * Method/Device: Ice drill (ICEDRILL) * Comment: Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
Law_Dome * Latitude: -66.733330 * Longitude: 112.833330 * Elevation: 1390.0 m * Location: Antarctica * Method/Device: Ice drill (ICEDRILL)
South_Pole * Latitude: -90.000000 * Longitude: 0.000000 * Elevation: 2835.0 m * Location: South Pole * Campaign: Ice_core_diverse * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL)
Comment:
Final data set of data selection with n=4182 entries. Data reaches back until 799472 BP, since it contains for the later part all CH4 data from the EDC ice core. However, for the spline calculation, only data younger than 156.3 kyr BP data are taken (n=2990) to have a time series that goes as far back as the CO2 time series. Data with event/site "Law Dome" have been measured at various different sites, see original papers for details.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventKöhler, Peter
2AGEAgeka BPKöhler, PeterGeocode
3Methane, dry-air mole fractionCH4nmol/molKöhler, Peternmol/mol = ppb
4Methane, dry-air mole fraction, standard deviationCH4 std dev±Köhler, Peter1-sigma uncertainty (ppb)
5Reference/sourceReferenceKöhler, Peter
Size:
12546 data points

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